the group of all permutations of a finite set.
- Symmetric key cryptography
cryptography A cryptography system in which both parties have the same encryption key, as in secret key cryptography. Opposite: public-key cryptography. (1998-06-09)
- Symmetric lisp
A parallel Lisp in which environments are first-class objects. It is implemented in Common LISP. [“Parallelism, Persistence and Meta-Cleanliness in the Symmetric Lisp Processor”, D. Gelernter et al, SIGPLAN Notices 22(7):274-282 (July 1987)]. [“A Programming Language Supporting First-Class Parallel Environments”, S. Jagannathan, MIT-LCS/TR 434, 1989]. E-mail: Suresh Jagannathan . (1995-03-16)
noun, Mathematics. 1. a matrix with the lower-left half equal to the mirror image of the upper-right half; a matrix that is its own transpose. symmetric matrix noun 1. (maths) a square matrix that is equal to its transpose, being symmetrical about its main diagonal. A skew symmetric matrix is equal to the negation of […]
- Symmetric multiprocessing
parallel (SMP) Two or more similar processors connected via a high-bandwidth link and managed by one operating system, where each processor has equal access to I/O devices. This is in contrast to the “compute server” kind of parallel processor where a front-end processor handles all I/O to disks, terminals and local area network etc. The […]